Cohort progression — Ringsjö Simklubb
Median season-best times of each birth-year cohort, overlaid by age — shows how consecutive groups developed at the same stage of training.
Event: 50 breaststroke50 freestyle100 breaststroke50 butterfly50 backstroke100 freestyle200 breaststroke100 butterfly100 backstroke100 medley200 medley200 freestyle25 butterfly25 freestyle25 backstroke25 breaststroke200 backstroke200 butterfly400 freestyle
50 m breaststroke men · 25 m pool
X: swimmer age in season · Y: median season-best time
born 2017 born 2016 born 2015 born 2014